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| author | afzal mohammed <afzal.mohd.ma@gmail.com> | 2020-02-27 16:29:02 +0530 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2020-02-27 12:15:24 +0100 |
| commit | cc2550b421aa30e3da67e5a7f6d14f3ecd3527b3 (patch) | |
| tree | a4ee1f7efee5a7a20477f46775a6c47ba2c74455 /drivers/clocksource/timer-sp804.c | |
| parent | a7cd39552194954bcdecfd9ff775466a61bda5bb (diff) | |
| download | lwn-cc2550b421aa30e3da67e5a7f6d14f3ecd3527b3.tar.gz lwn-cc2550b421aa30e3da67e5a7f6d14f3ecd3527b3.zip | |
clocksource: Replace setup_irq() by request_irq()
request_irq() is preferred over setup_irq(). The early boot setup_irq()
invocations happen either via 'init_IRQ()' or 'time_init()', while
memory allocators are ready by 'mm_init()'.
Per tglx[1], setup_irq() existed in olden days when allocators were not
ready by the time early interrupts were initialized.
Hence replace setup_irq() by request_irq().
Seldom remove_irq() usage has been observed coupled with setup_irq(),
wherever that has been found, it too has been replaced by free_irq().
A build error that was reported by kbuild test robot <lkp@intel.com>
in the previous version of the patch also has been fixed.
[1] https://lkml.kernel.org/r/alpine.DEB.2.20.1710191609480.1971@nanos
Signed-off-by: afzal mohammed <afzal.mohd.ma@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/91961c77c1cf93d41523f5e1ac52043f32f97077.1582799709.git.afzal.mohd.ma@gmail.com
Diffstat (limited to 'drivers/clocksource/timer-sp804.c')
| -rw-r--r-- | drivers/clocksource/timer-sp804.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/clocksource/timer-sp804.c b/drivers/clocksource/timer-sp804.c index 9c841980eed1..5cd0abf9b396 100644 --- a/drivers/clocksource/timer-sp804.c +++ b/drivers/clocksource/timer-sp804.c @@ -168,13 +168,6 @@ static struct clock_event_device sp804_clockevent = { .rating = 300, }; -static struct irqaction sp804_timer_irq = { - .name = "timer", - .flags = IRQF_TIMER | IRQF_IRQPOLL, - .handler = sp804_timer_interrupt, - .dev_id = &sp804_clockevent, -}; - int __init __sp804_clockevents_init(void __iomem *base, unsigned int irq, struct clk *clk, const char *name) { struct clock_event_device *evt = &sp804_clockevent; @@ -200,7 +193,9 @@ int __init __sp804_clockevents_init(void __iomem *base, unsigned int irq, struct writel(0, base + TIMER_CTRL); - setup_irq(irq, &sp804_timer_irq); + if (request_irq(irq, sp804_timer_interrupt, IRQF_TIMER | IRQF_IRQPOLL, + "timer", &sp804_clockevent)) + pr_err("%s: request_irq() failed\n", "timer"); clockevents_config_and_register(evt, rate, 0xf, 0xffffffff); return 0; |